Machine framework



A. B. B ROWN MACHINE FRAMEWORK Original Filed April 1924 //7 l/enfakA/f/ea/ 5 Bmwn PatentedJuly '17, 1928.

UNITED STATES PATENT OFFICE.

ALFRED BRUCE BROWN, OF CALDWELL, NEW JERSEY, ASSIGNOR TOWESTEBN TRIOCOMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION 01' NEW YORK.

MACHINE FRAMEWORK.

Original application flied April 4, 1924, Serial No. 704,149.- Dividedand this application filed December 7,

This invention relates to machine frameworks, and more particularly toimprovements in frameworks of hydraulic extrudin presses.

his application is a division of my copending application, Serial N 0.704,149, filed April 4, 1924.

Various ways of anchoring the columns of the framework to the cap of anextruding press and to lugs on the hydraulic cylinder thereof areemployed. For instance, the ends of the columns may be threaded and thenanchored to the cap and lugs b means of large nuts; or the columns may emade with integral bolt-head ends and the boltheads hooked over thecorner of the ca by inserting the column in a U-shape aperture in thecorner of the cap, this same construction being employed in securing thelower ends of the columns to the c linder. When employing the firstmentione means it is very difficult to obtain the same tension on eachone of the columns due to move ment between the nut and the boltthreads. The latter mentioned type is sometimes in sufficiently rigid.and since the face of the bolt-head of the column is not seatedthroughout, foreign matter gradually seeps in at the'uncngaged sidebetween the column and its seat, allowing corrosion and causing anunseating of the seated members.

The ob'ect of this invention is to increase the rigi ity and durabilityof machine frameworks.

According to one embodiment of the in vention, in the production of theimproved framework columns'are employed having a bolt-head construction,the bolt-head at either end ofthe column being integral therewith.Apertures in the four corners of the cap and in the lugs on thehydraulic cylinder are slightly larger than the bolthcad of the columns.Each column is extended through one of the four apertures in the cap andthe aperture in one of the lugs having flanged portions are then placedon the hydraulic cylinder. Split sleeves having flanged portions arethen placed around the ends of the columns, and the coliimns hearin thesplit sleeves are drawn back through t e aperturesin the ca and lugsuntil the flanged portions of the s eeves Serial No. 73,690.

seat themselves on the outside faces of the cap and lugs. Split nuts arethen inserted around threaded portions of the columns and the twosections of the split nuts being held together by suitable means, thenuts are drawn up tightly against theinside face of the cap and lugs, soas to prevent an unseating of the column from its ground seat on theupper face of the cap and lower face of the lugs on the hydrauliccylinder.

The invention will be more fully understood from the following detaileddescription taken with the accompanying drawings, in which Fig. 1 is afront elevational view of a press of the type employed for extrudinglead in which the improved framework is utilized;

Fig. 2 is a fragmentary vertical sectional view taken on the line 22 ofFig. 1, and

Fig. 3 is a fragmentary sectlonal view taken on the line 3-3 of Fig. 2,looking in the direction of the arrows.

Referring to the. drawings, the invention is disclosed as applied to anextruding press which comprises a hydraulic cylinder 10 and a ram 11,slidably mounted in the hydraulic cylinder. Integral with the cylinder10 are apertured lugs 12-42, the function of which a cylinder 16 into aposition wherein a plunger 17 may enter the cylinder. Continued upwardmovement of the ram 11 will cause the plunger 17 to displace any mattersuch as lead which may be contained in-the cylinder. The plunger 17depends from a cap 18 which is secured in spaced relation with respectto the hydraulic cylinder 10 by means of four columns 19-19. oppositeends of which are attached to the cap 18 and the lugs 12 by means ofsplit flanged sleeves 20, split nuts 21 and collars 22. -The manner inwhich the split sleeve, split nut and collars are employed will be morefully explained hereinafter.

= The four columns 19 need be only approxi- -mately of the same lengthmeasuring from the two inside faces of the column heads. Four aperturesin the cap 18 and corres onding apertures in the lugs 12 are emp 0 edwith flanged sleeves 20, nuts 21 and col ars 22 for anchoring the fourcolumns to the cap 18 and cylinder 10. The flanged sleeves are groundtofit snugly against the inner face of the head of the column 19 and theopposite face of said flange 20 s ground to fit snugly against theoutside face of the cap 18 or the lug 12. The thickness of the flangedsleeves 20 can be varied to'compensate for difference in lengths ofcolumns 19 so that the effective length of the columns will be exactlthe same. The sleeve portion of the flange sleeve 20 is made to fitsnugly between the column 19 and the walls of the aperture in the cap 18or lug 12. There IS consequently no play of the column in the aperturesin the cap and lugs.

The span between the several columns on account of the positiveanchoring method and spacing method may be made exactly the same and thecap 18 consequently may i be positioned exactly at right an les to theaxis of the hydraulic cylinder. ince adjacent parts are ground toproduce a perfect seat the possibility of foreign matter seeping in andunseating the column 1s very slight, particularly since engaged partsare at all times held in a rigid position. It is possible also when thisconstruction is used to employ shims for the purpose of compensating forirregularities.

The framework is assembled by first lacing the collars 22 over the heads0 the columns 19, inserting one head of each c0.l umn 19 through anaperture in the cap 18, and the other end of each column through acorresponding aperture in a lug 12 on the cylinder 10. One of the splitsleeves 20 is then placed around each end of the column with the flangedportion thereof adjacent to the column head, and the columns bearing theflanged sleeves are then drawn back until their flan ed portions restupon the outside faces 05 the cap and lugs and the heads of each columnrest on the faces of the flanges adjacent to them. The split nuts 21 arethen placed in position on threaded portions of the columns 19. Thecollars 22 are placed over the split nuts 21 and said split nuts bearingthe collars 22 drawn up tightly against the inside faces of the cap 18and lugs 12.

The improved framework is not limited to use in extruding presses, as itmay be emloyed wherever a heavy strong framework is required.

What is claimed is:

1. In a machine framework, a column having integral bolt-head ends,spaced members associated therewith and having apertures for receivingthe column, and means en aging the apertures for providing a circu arseat for the bolt-head ends of the columns on the spaced members.

2. In a machine framework, a column having an integral bolt-head end, amember associated therewith and having an aperture for receiving thecolumn, and an annular abutting member engaging the aperture anddesigned to provide a circular seat for the bolthead end of the columnon the member.

3. In a machine framework, a column having an integral bolt-head end, amember associated therewith, and a split sleeve designed to encircle thecolumn and provide a circular seat for the bolt-head end of the column.

4. In an extruding ress framework, :1 column having an annu arprojection, a cap having an aperture for receiving the column, and meansengaging the aperture for providing a circular supporting surface forsaid annular projection on said ca r 5. In an extruding press ramework,a column having bolt-head ends, a cap and a split flanged sleeve adaptedto form a supporting surface for the bolt-head ends ofsaid column onsaid cap.

6. In an extruding press framework, a column, a cap havin an aperture,and a split sleeve adapted to rigidly support said column in theaperture in said cap.

7. In an extruding press frame. work, a column having integral bolt-headends, a cap, a member disposed therefrom, a plurality of split flangedsleeves, and means for utilizing said split flanged sleeves for rigidlyand accurately positioning said cap in relationship to said member.

8. In an extruding press framework, :1 column having bolt-head ends, acap, a member, said cap and said member having apertures for receivingthe column, and means cooperating with said column fpr rigidly andaccurately positioning said cap in relationship to said member, saidmeans including members engaging the apertures in the cap and the firstmentioned member.

In witness whereof I hereunto subscribe my name, this 25th day ofNovember A. D.,

ALFRED BRUCE BROWN.

